get url from plugin

来源：互联网发布：js 0除以0 nan 编辑：程序博客网时间：2024/06/05 07:38

std::string GetUrl(NPP instance)
{
std::string origin;

NPVariant loc_value;
NPVariant href_value;
NPIdentifier href_id = NPN_GetStringIdentifier("href");
NPIdentifier location_id = NPN_GetStringIdentifier("location");

VOID_TO_NPVARIANT(loc_value);
VOID_TO_NPVARIANT(href_value);

do {
  NPObject* win_obj;
  if (NPN_GetValue(instance, NPNVWindowNPObject, &win_obj) !=
   NPERR_NO_ERROR)
  {
   break;
  }
  if (!NPN_GetProperty(instance, win_obj, location_id, &loc_value) ||
   !NPVARIANT_IS_OBJECT(loc_value))
  {
   break;
  }

  NPObject* loc_obj = NPVARIANT_TO_OBJECT(loc_value);
  if (!NPN_GetProperty(instance, loc_obj, href_id, &href_value) ||
   !NPVARIANT_IS_STRING(href_value))
  {
   break;
  }

std::string href(NPVARIANT_TO_STRING(href_value).utf8characters,
NPVARIANT_TO_STRING(href_value).utf8length);

origin = href;

} while (0);

NPN_ReleaseVariantValue(&loc_value);
NPN_ReleaseVariantValue(&href_value);
return origin;
}